直到几年前,除了磨削别无选择。即使有,也是用来加工硬度大于55HRC工件,将它加工成最终形状,而且表面质量高。随着高硬度切削材料和相关机床的发展,这种硬度极限被突破了。这有利于配备可以调节几何角度的刀具的机床进行车削、钻孔、研磨和铣削。目前,专家估计硬度极限可以达到65HRC。 Until a few years ago, there was no choice but to grind. Even if there is, is also used to process the workpiece hardness greater than 55HRC, it is processed into the final shape, and the surface of high quality. With the development of high hardness cutting materials and related machine tools, this hardness limit has been exceeded. This facilitates the turning, drilling, grinding and milling of machines with tools that can adjust the geometry. At present, experts estimate the hardness limit can reach 65HRC.